Nail driving and setting machine



A. RIVER. NAIL DRIVING AND SETTING MACHINE. APPLICATION FILED FEB. 11,1921.

139mm Patentedsept. 6, 19211.

2 SHEETS-SHEET I.

WITNESSES ll TTOfM/EVS A. RIVER.

- NAIL DRIVING AND SETTING MACHINE. APPLICATION FILED FEB, 11, 192!-LBQQQGOD PatenbedSept. 6, 1921..

( WI TNESRES l/W/E/V TOR A T TOR/VE V8 OLPE RIVER, 0F BROOKLYN, NEWYORK.

NAIL DRIVING AND SETTING MACHINE. A

Application filed February 11, 1921.

To all whom it may concern:

Be it known that I, AooLPH RIVER, a citizen of the Republic of Finland,and a resident of New York city, borough of Brooklyn, in the county ofKings, and State of New York, have invented a new and Improved N ailDriving and Setting Machine, of which the following is a full, clear,and exact description.

This invention relates to improvements in nail driving and settingmachines, particularly to a machine which is primarily designed forhandling parquet nails, such as are commonly used in laying floors.

An object of the invention is to provide a manually operable machine ofthe character rovide means associated with stated and. to the machine onautomatically feeding the nails.

vA still further object is to provide a machine, which accomplishes thedriving and setting operation at the same time and which is therefore, agreat time saver when laying parquet floors.

Another object is to provide a machine of the character stated, whichwill be simple and practical in construction, strong, durable andefficient in use and comparatively inexpensive to manufacture.

Vith these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements ofparts, to be more fully here-inafter described and pointed out in theclaims.

In the accompanying drawings:

Figure 1 is a view in side elevation of'my improved machine, parts beingbroken away for clearness;

Fig. 2 is a fragmentary view in longitudinal section therethrough, thedriver bar being shown in elevated position, and parts being broken awayfor-clearness;

Fig. 3 is a view partly in longitudinal section and partly in elevationthrough the machine, the driver bar being shown in descended position; I

Fig. 4 is a view in section on the line H of Fig. 3, when the driver baris in elevated position;

Fig. 5 is a view similar to Fig. 4:, showing the position of the partsupon the descent of the driver bar;

Fig. 6 is a top plan view ofthe guide. tray Fig. 7 is a reducedperspective view of my improved loading attachment; and

specification of Letters Patent.

Patented Sept. d, 1921.

Serial No. 444,149.

Fig. 8 is an enlarged View in section therethrough on the line 8-8 ofFig. 7

Referring in detail to the drawings, 1 represents the upright tframie,preferably formed by bending the intermediate portion of a metal strip 2to form a pair of parallel side walls 3, a top 4 and a bottom wall 5.One end of the strip extends transversely acrossth e frame between theside walls 3 and forms a platform, such as 6. The other end 7 of thestrip extends outwardly and upwardly from one side of the frame andforms a support for a feeder 8. The particular method of attaching thefeeder to the support will be more fully hereinafter described.

The frame 1 is supported in upright position by a bracket 9 having oneend bolted to the lower end of the frame by bolts 10. The intermediateportion 11 of the bracket 9 extends laterally and upwardly inparallelism with the end 7 of the strip 2, at a distance below thestrip. The other end 12 of the bracket is curved downwardly and attachedto a transversely disposed bracket, such as 13 which engages thefloorand prevents the accidental tipping over of the frame 1.

A driver bar 1 1 in the form of a plunger is movable through alinedopenings in the upper end 4 of the frame and the platform 6. A. disk 15around the plunger between the platform 6 and the upper end 4 of theframe limits the upward movement of the plunger and anintegral head suchas 16, limits its downward movement. A coiled spring 17 around theplunger or driver bar between the platform 6 and the disk 15 serves tonormally maintain the disk in engagement with the upper end 4: of theframe. Any suitable casing, such as 18, may be fitted over the frame toprotect the spring from dust.

The feeder 8 is in the form of a tube having a longitudinal slot 19extending throughout its length. The heads of nails 20 are supported bythe walls of the slot so that the nails are .maintained in uprightposition. Guide brackets 21 fixed to the feeder accommodate the ends 7of the strip 2, so that when the end 7 is introduced throughthebrackets, the feeder will be rigidly supported at an angle to the frame,which is indicated clearly in Fig. 1. The feeder may belocked againstaccidental sliding movement on its support by a screw, such as 22 passedthrough one of the guide brackets.

An opening 23 in.the side wall 3 of the frame permits the lower end ofthe feeder to extend into the frame and also permits the nails 20 topass. through the wall of the frame, as they are fed by gravity down theinclined feeder.

A tapered guide tray 24 for the ends of the nails is supported on theintermediate portion 11 of the bracket 9 and is held in place by aU-shaped bracket 25 straddling the bracket 9.

A pair'of blocks or castings such as 26, are rigidly secured in thelower end of the frame 1, preferably by the bolts 10 and are providedwith opposed recesses which cooperate to form a tapered socket 27adapted to limit the downward movement of a tapered. shoulder 28 on thespring-held driver bar 14.

The lower end 5 'of the frame is formed with an opening 29, registeringwith a threaded socket 30 in the lower ends of the blocks 26. The socket30 receives a threaded nipple 31 on a bearing block 32. The

block 32 is provided with a vertical bore or channel 32', registeringand communicating with the socket 27 Spring steel plates 33 having oneend affixed to the outer faces of the blocks 26 carry at their upperends blocks 34. The blocks 34have opposed recesses therein whichcooperate to form an annular passageway communicating with the socket27. The passageway is smaller than the diameter of the body portion ofthe plunger 14 and a beveled cam face 35 around the upper end of thepassageway is engaged by the tapered shoulder 28 on the plunger tospread the blocks 34 against the tension of the spring plates 33.

Opposed lugs 36 on the upper ends of the blocks34 are normallymaintained in closed relationship by the springs plates and serve toprevent the nails 20 from sliding off of the lower end of the feeder, 8and dropping into the channel 32.

The plunger or driver bar at its lower end terminates in a straightreduced.- portion 37 of substantially the same diameter as the heads ofthe nails 20. Y

It will be apparent that any a proved means might be resorted to for loaing the nails into the feeder 8. I have illustrated 'Figs. 7 and 8, onevery efficient form of loader. This loader comprises a tube 38 having alon itudinal slot 39 therein. One end of the tu e opens into ahoppersuch as 40 and at its other end a split collar 41 rotatable freely onthe tube controls the passage of nails throu h the slot.

The operation 0 the driving-and setting machine is as'follows Assumingthe feeder 8 to be loaded, it is necessary to drive the plunger 14downwardly, spreading the blocks 34 and the lugs 36 and permitting asingle nail to, drop from the feeder 8 in the soc 'et' 27. The spring 17will restore the plunger to its elevated potool (not shown) to strikethe head 16 of the plunger or driver bar, the reduced lower end 37 ofthe driveribar will engage the head of the nail 20 in the channel 32 anddrive the nail into the floor. The end 37 of the driver bar is ofsufficient length to extend below the bearing block 32, when the plungeris driven home, as shown in Fig. 3 and will thus serve to set the nailas well as to drive it. This downward nail driving operation of theplunger above described, again spreads the lugs 36 and permits anothernail to drop into the socket 27, as indicated in Fig. 3. As the plungeragain moves upward, this nail will drop into the channel 32'. In otherwords, upon every driving operation, the plunger automatically serves tofeed another nail into position to be driven,

Although I have "illustrated one of the preferred embodiments of myinvention, it will be apparent that various slight changes andalterations might be made in the general form and arrangement of theparts described without departing from the invention and hence I do notlimit myself to the precise details set forth, but shall consider myselfat liberty to make such' slight changes the set'37 become accidentallybroken it may be -quickly extracted and replaced by another.

I claim 1. In a machine of the character described, i

a spring-held driver bar, a channel wherein the working end of saiddriver bar is movable, a gravity operated feeder and means actuated bysaid driver bar limiting the passage of nails from the feeder into saidchan-' nel, said means comprising a spring-held expansiblesocketnormally preventing the 'passage of nails from the feederandadapted to permit such passage when expanded by the driver bar, saidsocket including a beveled cam face, said driver bar including a taperedshoulder engageable with the cam face to expand the socket. I v

2. In a machine of the character described,

a-hollow standard, a pair of blocks fixed in.

the lower end of the standard andhaving opposed recesses therein forminga socket,

spring plates having one end. fixed to the outer faces of sa1d blocks, apair of jaws se-.

aaeopeo through said channel to drive and set a nail located in saidchannel and including a tapered shoulder engageable with the walls 0tsaid expansible socket upon its downward movement to operate the socketand permit the dropping of a nail from the feeder into thefirst-mentioned socket.

3. A device of the character described in claim2, and including abracket supporting said standard in upright position'and a tapered guidetray supported on the bracket a gravity feeder, a tapered channel inwhich nails drop from the feeder, an expansible socket controlling thepassage of nails from the feeder into the channel, a driver bar including a tapered shoulder engageable with the socket to expand the sameand permit the passage of a nail and also, including a reduced nailengaging end fitting the channel and of sufiicient length to engageranail tilt in the channel before theshoulder expands the socket wherebyjamming of nails in the channel is prevented.

6. In a machine of the character described, a hollow standard, a springheld driver bar mounted in the standard, an expansible socket at thelower end of the standard, a gravity feeder associated with the socket,coacting lugs integral with the-walls of the socket normally preventinga passage vof nails from the feeder, means integral with the driver barfor separating said lugs upon the downward movement-of the driver bar.

7. In a machine of the character described, a hollow standard, a springheld driver bar mounted in the standard, an 'expansible socket at thelower end of the standard, a gravity feeder associated with thesocket,.coacting lugs integral with the walls of the socket normallypreventing a passage of,

nails from the feeder, means integral withthe driver bar for separatingsaid lugsupon the downward movement of'the driver bar, a guide channelfor the nailsat the lower endof the socket through which the lower endof the driver bar is adapted to be driven, a bearing block screwedinto'the lower end of the standard, spacing members interposed betweenthe bearing block and standard, regulating the depth of set of saidnails.

ADOLPH RIVER.

